Great background!
If you don't mind me criticizing... one thing that bothers me is ther left ear. It's leaning off to the side to much. The other ear is too high on the face... : P The earings look like blue puffballs. The nose is too low-down on the face, making the line go up to far. The pupil might look better solid black, and you could blend the iris.
Great draw otherwise! I love the background, the hair, and the shirt especially. Keep drawing and you'll improve. ^_^